:root{
  --bg:#f3f6fc;
  --white:#ffffff;
  --ink:#172448;
  --muted:#64718a;
  --primary:#4058cf;
  --accent:#15a5a2;
  --line:#dfe5f0;
  --dark:#111c42;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font:16px/1.8 Arial,sans-serif;
}
a{color:inherit;text-decoration:none}
.wrap{max-width:1160px;margin:auto;padding:0 24px}
header{background:white;border-bottom:1px solid var(--line)}
nav{
  min-height:88px;display:flex;align-items:center;
  justify-content:space-between;gap:20px;
}
.logo{font:bold 26px Arial,sans-serif;letter-spacing:-1px}
.logo span{color:var(--primary)}
.menu{display:flex;gap:25px;flex-wrap:wrap}
.menu a{font-size:14px;font-weight:bold}
.menu a:hover{color:var(--primary)}
.hero{
  color:white;padding:112px 0;
  background:
    radial-gradient(circle at 85% 15%,#485bbb,transparent 35%),
    linear-gradient(115deg,#111c42,#263b86);
}
.kicker{
  font-size:12px;font-weight:800;letter-spacing:3px;
  text-transform:uppercase;color:var(--accent);
}
.hero .kicker{color:#8ff3e8}
h1,h2,h3{line-height:1.2}
h1{
  font-size:clamp(43px,7vw,77px);
  max-width:850px;letter-spacing:-2px;
}
h2{font-size:clamp(30px,4vw,44px)}
h3{font-size:25px}
p{color:var(--muted)}
.lead{color:#d7e4ff;font-size:21px;max-width:750px}
.button{
  display:inline-block;padding:14px 28px;
  background:var(--accent);color:white;
  border-radius:9px;font-weight:bold;margin-top:24px;
}
section{padding:75px 0}
.grid{
  display:grid;grid-template-columns:repeat(2,1fr);
  gap:25px;margin-top:36px;
}
.card{
  display:block;background:white;padding:37px;
  border:1px solid var(--line);border-radius:15px;
  transition:.2s;
}
.card:hover{
  border-color:var(--primary);
  transform:translateY(-3px);
}
.card small{
  color:var(--primary);font-weight:800;
  letter-spacing:2px;text-transform:uppercase;
}
.card p{font-size:15px}
.article{
  max-width:860px;margin:80px auto;
  padding:0 24px;min-height:55vh;
}
.article h1{font-size:clamp(38px,6vw,58px)}
.article h2{font-size:30px;margin-top:42px}
.article p{font-size:17px;line-height:2}
.formula{
  padding:25px;background:#e3e9ff;
  border-left:4px solid var(--primary);
  font-size:22px;text-align:center;
  border-radius:6px;margin:25px 0;
}
.feature{
  padding:45px;background:#e5efff;
  border-left:5px solid var(--primary);
  border-radius:8px;
}
footer{background:var(--dark);color:white;padding:45px 0}
footer p{color:#aab8d7}
@media(max-width:750px){
  nav{flex-direction:column;align-items:flex-start;padding:20px 0}
  .menu{gap:14px}
  .grid{grid-template-columns:1fr}
  .hero{padding:65px 0}
  section{padding:50px 0}
  .feature{padding:25px}
}